Arctic farming: Town defies icy conditions with hydroponics

Re:Arctic farming: Town defies icy conditions with hydroponics by lightedman on Monday November 07, 2016 @11:08AM (#12892112)

"Plenty of this light was in the green area so not absorbed by plants."

This isn't true. The majority of light from an HPS light is green, yet huge crops are grown using that light all the time. Plants utilize almost every visible wavelength (and some invisible wavelengths) to some extent. LEDs generally just focus on the wavelengths that have been determined to be efficiently utilized. It is all however still 100% crop-dependent. Some plants simply hate LED lighting because of the missing spectrum (like my orchids.)

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Re:Arctic farming: Town defies icy conditions with hydroponics by kw71 on Monday November 07, 2016 @08:21PM (#12896839)

Thank you for your insight. I thought that whatever makes chlorophyll green, filters the green light rendering it extraneous.

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Re:Arctic farming: Town defies icy conditions with hydroponics by lightedman on Friday November 11, 2016 @12:03PM (#12932384)

Gotta remember photon physics - a photon gets absorbed and then another photon is re-emitted at a lower wavelength. That is just the nature of thermodynamics, second law specifically.

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